… trends in the synthesis of pyrrolizidine necine bases and “simple” indolizidine alkaloids (syntheses
of “… As pyrrolizidine and indolizidine alkaloids exist in Nature typically as optically pure …

… The various and fundamental biological activity of pyrrolizidine1 and indolizidine2 alkaloids
… also consistent with the biosynthesis of these pyrrrolizidine and indolizidine alkaloids.1a, 2 …

… Indolizidine rings have a 5-membered ring fused to 6-… Pyrrolizidine, qninolizidine, and
indolizidine alkaloids are … alkaloids are a major subgroup of indolizidine alkaloids. Both the …

… The present article describes the synthesis of a wide spectrum of natural products of the
class pyrrolidines, pyrrolizidines and indolizidines using proline as a viable synthetic precursor. …

… The steric results of three syntheses of indolizidine methobromide and one of pyrrolizidine
… Like the indolizidine and quinolizidine methosalts, pyrrolizidine methobromide has not …

… and mesembrine alkaloids). This review deals with alkaloids in which the indolizidine ring is
… followed by the opening of the pyrrolizidine ring with BrCN and dehydrobromination to 126. …

… allows the rapid and stereocontrolled synthesis of azabicyclic skeletons. Small modifications
of the structure of pyrrolizidines, indolizidines and pyrroloazepinolizidines induce significant …

… nickel-catalysed reactions has resulted in the synthesis of three indolizidine frog alkaloids
and pyrrolizidines 21 and 22. The pyrrolizidines were prepared in two steps from alkynols 20 …

… This project involved the use of such an intramolecular Horner-Wittig cyclisation process to
form pyrrolizidine and indolizidine alkaloid systems, and one of the aims of the project was to …

… 1 The synthesis of necines The synthesis of both the pyrrolizidine and indolizidine
skeletons … For the pyrrolizidine synthesis the key intermediate 2 was prepared from 1 by N-alkylation, …